PMID- 25253448
OWN - NLM
STAT- MEDLINE
DCOM- 20151005
LR  - 20191210
IS  - 0959-3330 (Print)
IS  - 0959-3330 (Linking)
VI  - 36
IP  - 5-8
DP  - 2015 Mar-Apr
TI  - Performance and influence factors of completely autotrophic nitrogen removal over 
      nitrite (CANON) process in a biofilter packed with volcanic rocks.
PG  - 946-52
LID - 10.1080/09593330.2014.969327 [doi]
AB  - Completely autotrophic nitrogen removal over nitrite (CANON) process was 
      considered as one of the most efficient and economical nitrogen removal 
      processes, which was suitable for treating wastewater with low ratio of carbon to 
      nitrogen. In this study, an enlarging start-up strategy for CANON process was 
      proposed, and a 40-L CANON reactor was successfully started by seeding 2-L mature 
      biofilm containing both aerobic ammonia-oxidizing bacteria (AerAOB) and anaerobic 
      ammonia-oxidizing bacteria (AnAOB). The effects of dissolved oxygen (DO), ammonia 
      loading rate and the ratio of air inflow to water inflow (Qair/Qwater) on 
      nitrogen removal performance were investigated. The distribution of AerAOB and 
      AnAOB was analysed using fluorescence in situ hybridization (FISH) technique. The 
      system reached a maximum NRR of 3.11 kg N m(-3) d(-1) with a removal efficiency 
      of 89.5%, and the average value in steady state was 2.42+/-0.26 and 
      (83.07 +/- 6.89)%, respectively. Analysis of influence factors showed the important 
      role of high DO (around 5 mg L(-1)), for the high-rate nitrogen removal, and the 
      Qair/Qwater should be controlled at 28-40 for stable operation. FISH results 
      suggested that AerAOB and AnAOB predominated in the reactor, with proportions of 
      46.8% and 39.3%, respectively. This study demonstrated that the biofilter 
      operated with high effluent DO was a feasible setup for CANON process.
FAU - Liang, Yuhai
AU  - Liang Y
AD  - a Key Laboratory of Water Quality Science and Water Environment Recovery 
      Engineering , Beijing University of Technology , Beijing 100124 , People's 
      Republic of China.
FAU - Li, Dong
AU  - Li D
FAU - Zhang, Xiaojing
AU  - Zhang X
FAU - Zeng, Huiping
AU  - Zeng H
FAU - Zhang, Jie
AU  - Zhang J
LA  - eng
PT  - Evaluation Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20141017
PL  - England
TA  - Environ Technol
JT  - Environmental technology
JID - 9884939
RN  - 0 (Nitrites)
RN  - N762921K75 (Nitrogen)
SB  - IM
EIN - Environ Technol. 2015;36(8):i
MH  - Autotrophic Processes
MH  - Feasibility Studies
MH  - Filtration/*instrumentation
MH  - In Situ Hybridization, Fluorescence
MH  - Nitrites
MH  - Nitrogen/*isolation & purification
MH  - *Water Purification
OTO - NOTNLM
OT  - CANON
OT  - DO
OT  - FISH
OT  - nitrogen removal
OT  - start-up
EDAT- 2014/09/26 06:00
MHDA- 2015/10/06 06:00
CRDT- 2014/09/26 06:00
PHST- 2014/09/26 06:00 [entrez]
PHST- 2014/09/26 06:00 [pubmed]
PHST- 2015/10/06 06:00 [medline]
AID - 10.1080/09593330.2014.969327 [doi]
PST - ppublish
SO  - Environ Technol. 2015 Mar-Apr;36(5-8):946-52. doi: 10.1080/09593330.2014.969327. 
      Epub 2014 Oct 17.